Question

Grashhoff number is given by

a.

gD³.β.Δtρ²/μ²

b.

gD²βΔtρ/μ²

c.

gD²βΔtP²μ

d.

gD³βΔtP²/μ

Answer: (a).gD³.β.Δtρ²/μ²

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Q. Grashhoff number is given by

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